#include<cstdio>
#include <iostream>
using namespace std;

#include<unistd.h>

int main()
{
  //int ret = printf("hello\n");
  //cout << ret << endl;

  //ret = printf("你好\n");
  //cout << ret << endl;

  //cout << sizeof("你") << endl;
  
  //cout << "dfwff";
  //int a = 0;
  //cin >> a;
  //sleep(1);

  return 0;
}
